CH175164A
(en )
1935-02-16
Device for treating the skin.
CH216171A
(en )
1941-08-15
Process and plant for biological wastewater treatment.
AT131134B
(en )
1933-01-10
Process for making processed cheese.
CH176636A
(en )
1935-04-30
Process for wastewater purification.
CH205107A
(en )
1939-06-15
Method and device for the production of fiberglass.
AT140575B
(en )
1935-02-11
Process and system for degassing raw lignite, waste coal and the like like
CH223782A
(en )
1942-10-15
Process and device for the biological purification of waste water and similar liquids.
CH182664A
(en )
1936-02-29
Process and system for waste destruction.
CH196473A
(en )
1938-03-15
Process for making sanitary napkins and sanitary napkins made therefrom.
CH158174A
(en )
1932-11-15
Method and device for the production of road surfaces.
AT144733B
(en )
1936-02-25
Process for the production of disinfecting and preserving agents.
SU51954A1
(en )
1937-11-30
The method of disposal of waste plastic
AT107988B
(en )
1927-11-25
Method and device for processing cellulose.
CH209603A
(en )
1940-04-30
Method and device for hardening glass plates and other glass objects.
CH190548A
(en )
1937-04-30
Disinfection method.
CH189396A
(en )
1937-02-28
Method and device for the fermentation of solutions.
CH201663A
(en )
1938-12-15
Method and device for the continuous conversion of coordinates.
CH181103A
(en )
1935-11-30
Disinfection method.
CH259826A
(en )
1949-02-15
Process for purifying water.
AT140710B
(en )
1935-02-25
Method and device for the production of cam sleepers.
AT144763B
(en )
1936-02-25
Method and device for extinguishing arcs.
CH212742A
(en )
1940-12-15
Method and device for the transmission of messages.
AT142471B
(en )
1935-07-25
Process for keeping steam turbine systems in readiness for load and device for this purpose.
CH205377A
(en )
1939-06-15
Method and device for the simultaneous wireless transmission of several message signals.
AT112333B
(en )
1929-02-25
Process and system for processing farmyard manure.